The lipid composition of the membranes of different organisms can vary, depending on the organism's environmental conditions. Which of the following best describes the hydrocarbon tails in the phospholipid bilayer of organisms that thrive in extreme cold? They will be unsaturated to prevent packing, decreasing viscosity. They will be saturated to prevent packing, decreasing viscosity. They will be unsaturated and pack together to increase viscosity. They will be saturated and pack together to increase viscosity

They will be saturated and pack together to increase viscosity.

Explanation:

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regulation of gene expression. gene expression can be regulated by various cellular processes with the aim to control the amount and nature of the expressed genes. these regulatory proteins bind to dna and send signals that indirectly control the rate of gene expression

explanation:

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lysogenic     viral dna merges with host cell dna

lysogenic     no symptoms

lytic               viral dna takes over

lysogenic     virus does not destroy host cell

lytic               virus destroys host cell

lytic               induces symptoms of viral infection

lysogenic       cell reproduces and spreads provirus